The demand function for a certain children bicycle is given by [math]
Where x is the quantity demanded per week and p (0 (a) Evaluate the elasticity at 40. [math]
(b) Should the unit price be raised slightly from 40 in order to increase revenue? Enter 1 for Yes or 2 for No . [math]
(c) When is the demand unitary. [math]

(d) What is the maximum revenue? [math]